I was opposed to Twitter when I first heard of it. Well, not so much opposed as I didn't understand why anyone would want to hear what I had to say unless I was some singer-actress-athlete-celebrity. But eventually I caved, mostly interested in what my friends had to say, and made a profile.
(Random thought: I wonder how many profiles I have floating around in cyberspace since my family first got internet in 2002?)
Of course, like most tweeters, I got hooked and rarely does a day go by that I don't check my TL.
But it wasn't until a few days ago that I realized how scary Twitter actually is.